
#include <common.h>
#include <malloc.h>
#include <errno.h>

#include "layout.h"

#define TRACEF(str, x...) \
do { \
	printf("%s:%d: " str, __func__, __LINE__, ## x); \
} while (0)

#define LTRACEF debug

#define flash_blk_size EMMC_BLOCK_SIZE
#define CACHE_LINE CONFIG_SYS_CACHELINE_SIZE
#define ROUNDUP(x, y)   (((x) + ((y) - 1)) & ~((y) - 1))

#define RESERVE_PART	4
#define LOCAL_TRACE CRITICAL /* level: CRITICAL, ALWAYS, INFO, SPEW*/

#define GPT_ENTRY_NUMBERS		128
#define GPT_MAGIC {0x45, 0x46, 0x49, 0x20, 0x50, 0x41, 0x52, 0x54}
#define GPT_V1 {0x00, 0x00, 0x01, 0x00}
#define NULL_GUID {0x00000000, 0x0000, 0x0000, 0x0000000000000000}

// table for CRC32 calculation, polynomial 0x04C11DB7
unsigned int crc32_tbl[256] = {
	0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
	0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
	0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
	0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
	0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
	0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
	0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
	0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
	0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
	0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
	0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
	0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
	0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
	0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
	0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
	0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
	0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
	0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
	0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
	0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
	0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
	0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
	0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
	0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
	0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
	0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
	0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
	0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
	0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
	0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
	0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
	0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
	0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
	0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
	0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
	0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
	0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
	0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
	0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
	0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
	0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
	0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
	0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
	0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
	0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
	0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
	0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
	0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
	0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
	0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
	0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
	0x2d02ef8dL
};

static struct part_info g_reserve_part_info[RESERVE_PART] = {
	{.index = 0,	.name = "bootcode",	.is_use = true,
		.start_addr = 0x00020000, .bytes_size = 0x00200000},
	{.index = 1,	.name = "factory",	.is_use = true,
		.start_addr = 0x00220000, .bytes_size = 0x00400000},
	{.index = 2,	.name = "fw table",	.is_use = true,
		.start_addr = 0x00620000, .bytes_size = 0x00008000},
	{.index = 3,	.name = "GoldFwTable",	.is_use = true,
		.start_addr = 0x00628000, .bytes_size = 0x00008000},
};

const struct __guid linux_guid = {0xEBD0A0A2, 0xB9E5, 0x4433, 0x87C068B6B72699C7};

struct gpt_table gpt_primary = {
	.signature = GPT_MAGIC,
	.version = GPT_V1,
	.head_size = 92,
	.head_crc = 0,
	.reserve0 = 0,
	.guid = NULL_GUID,
	.part_table_num = 128,
};

struct partition_entry protect_mbr = {
	.active = 0,
	.head_start = 0,
	.sector_start = 2,
	.cylinder_start = 0,
	.id = 0xEE,
	.head_end = 0xFF,
	.sector_end = 0xFF,
	.cylinder_end = 0xFF,
	.rel_sector_start = 1,
};

static unsigned int crc32_new(const unsigned char *buf, int len)
{
	unsigned int crc32val;
	int i;

	crc32val = ~0L;
	for (i = 0; i < len; i++)
		crc32val = crc32_tbl[(crc32val ^ buf[i]) & 0xff] ^ (crc32val >> 8);
	return ~crc32val;
}

int get_part_info_index(unsigned char *name, struct part_info *pinfo)
{
	int i;

	for (i = 0; i < MAX_PART_INFO; i++) {
		if(!strncmp((const char *)name, pinfo[i].name, strlen(pinfo[i].name)))
			return i;
	}
	return -1;
}

void gen_guid(struct __guid *guid)
{
	unsigned int tmp1, tmp2;

	guid->data1 = (unsigned int)rand();
	guid->data2 = (unsigned short)rand();
	guid->data3 = (unsigned short)rand();
	tmp1 = (unsigned int)rand();
	tmp2 = (unsigned int)rand();
	guid->data4 = (unsigned long)tmp1 << 32 | (unsigned long)tmp2;
}

void gpt_primary_table_dump(struct gpt_table *gpt)
{
	int i;

	for(i=0; i<8; i++)
		LTRACEF("EFI = 0x%x\n", gpt->signature[i]);
	for(i=0; i<4; i++)
		LTRACEF("version = 0x%x\n", gpt->version[i]);
	LTRACEF("head_size = 0x%x\n", gpt->head_size);
	LTRACEF("head_crc = 0x%x\n", gpt->head_crc);
	LTRACEF("current_lba = 0x%lx\n", gpt->current_lba);
	LTRACEF("back_lba = 0x%lx\n", gpt->backup_lba);
	LTRACEF("first_lba = 0x%lx\n", gpt->first_usable_lba);
	LTRACEF("last_lba = 0x%lx\n", gpt->last_usable_lba);
	LTRACEF("part_table_lba = 0x%lx\n", gpt->part_table_lba);
	LTRACEF("part_table_num = 0x%x\n", gpt->part_table_num);
	LTRACEF("part_table_size = 0x%x\n", gpt->part_table_size);
	LTRACEF("crc value = 0x%x\n", gpt->part_table_crc);
}

void gpt_part_table_dump(struct gpt_part_table *gpt_part)
{
	int i;
	unsigned char name[36];
	struct __guid *id;

	for(i=0; i<36; i++)
		name[i] = gpt_part->part_name[i*2];
	LTRACEF("name = %s, lba =[ %ld, %ld ]\n", name, gpt_part->start_lba, gpt_part->end_lba);
	id = &gpt_part->type;
	LTRACEF("GUID type = [0x%x], [0x%x], [0x%x], [0x%lx]\n",
		id->data1, id->data2, id->data3, id->data4);
	id = &gpt_part->id;
	LTRACEF("GUID id = [0x%x], [0x%x], [0x%x], [0x%lx]\n",
		id->data1, id->data2, id->data3, id->data4);
}

int build_part_table_to_gpt(struct fw_info *fw_infos, struct part_info *p_infos)
{
	struct part_info *reserve;
	struct gpt_part_table *p_gpt;
	struct mbr_table *mbr;
	unsigned char *buffer;
	unsigned int part_num;
	int i, j;
	unsigned int crc_value;
	unsigned int total_lba;

	mbr = memalign(CACHE_LINE, ROUNDUP(GPT_SIZE, CACHE_LINE));
	if (!mbr) {
		TRACEF("ERROR %s: No Memory!!\n", __func__);
		return -1;
	}

	buffer = memalign(CACHE_LINE, ROUNDUP(GPT_SIZE*32, CACHE_LINE));
	if (!buffer) {
		TRACEF("ERROR %s: No Memory!!\n", __func__);
		return -1;
	}
	memset(mbr, 0, GPT_SIZE);
	memset(buffer, 0, GPT_SIZE*32);
	total_lba = EMMC_GPT_8G_MAX / flash_blk_size;
	srand(get_ticks());

	/* start fill protect mbr */
	mbr->part[0] = protect_mbr;
	mbr->part[0].sector_num = total_lba;
	mbr->signature = 0xAA55;
	storage_write(0, GPT_SIZE, mbr);

	/* start fill gpt partition table */
	part_num = 0;
	reserve = g_reserve_part_info;
	for(i=0; i<RESERVE_PART; i++) {
		p_gpt = (struct gpt_part_table *)buffer + part_num;
		p_gpt->type = linux_guid;
		p_gpt->start_lba = reserve[i].start_addr / flash_blk_size;
		p_gpt->end_lba = (reserve[i].start_addr + reserve[i].bytes_size) / flash_blk_size - 1;
		for(j=0; j<36; j++) {
			p_gpt->part_name[j*2] = reserve[i].name[j];
			if(fw_infos[i].name[j]==0)
				break;
		}
		p_gpt->flags = 0;
		gen_guid(&p_gpt->id);
		part_num++;
	}

	for(i=0; i<MAX_FW_INFO; i++) {
		p_gpt = (struct gpt_part_table *)buffer + part_num;
		if(strcmp(fw_infos[i].name, "imageFile")==0)
			continue;
		if(fw_infos[i].is_use && part_num<128) {
			p_gpt->type = linux_guid;
			p_gpt->start_lba = fw_infos[i].start_addr / flash_blk_size;
			p_gpt->end_lba = (fw_infos[i].start_addr + fw_infos[i].bytes_size) / flash_blk_size - 1;
			for(j=0; j<36; j++) {
				p_gpt->part_name[j*2] = fw_infos[i].name[j];
				if(fw_infos[i].name[j]==0)
					break;
			}
			p_gpt->flags = 0;
			gen_guid(&p_gpt->id);
			part_num++;
		}
		if(part_num >= 128)
			break;
	}
	for(i=0; i<MAX_PART_INFO; i++) {
		p_gpt = (struct gpt_part_table *)buffer + part_num;
		if(p_infos[i].is_use && part_num<128) {
			p_gpt->type = linux_guid;
			p_gpt->start_lba = p_infos[i].start_addr / flash_blk_size;
			p_gpt->end_lba = (p_infos[i].start_addr + p_infos[i].bytes_size) / flash_blk_size - 1;
			for(j=0; j<36; j++) {
				p_gpt->part_name[j*2] = p_infos[i].name[j];
				if(fw_infos[i].name[j]==0)
					break;
			}
			p_gpt->flags = 0;
			gen_guid(&p_gpt->id);
			part_num++;
		}
		if(part_num >= 128)
			break;
	}
	for(i=0; i<(int)part_num; i++) {
		p_gpt = (struct gpt_part_table *)buffer + i;
		gpt_part_table_dump(p_gpt);
	}

	crc_value = crc32_new(buffer, GPT_SIZE*32);

	/* start fill gpt primary table */
	gpt_primary.current_lba = 1,
	gpt_primary.backup_lba = total_lba - 1;
	gpt_primary.first_usable_lba = (128 * sizeof(struct gpt_part_table)) / flash_blk_size + 2;
	gpt_primary.last_usable_lba = total_lba - gpt_primary.first_usable_lba;
	gpt_primary.part_table_lba = 2;
	gpt_primary.part_table_size = sizeof(struct gpt_part_table);
	
	crc_value = crc32_new(buffer, GPT_SIZE*32);
	gpt_primary.part_table_crc = crc_value;
	gpt_primary.head_crc = 0;
	crc_value = crc32_new((unsigned char *)&gpt_primary, 92);
	gpt_primary.head_crc = crc_value;

	storage_write(flash_blk_size*gpt_primary.part_table_lba, GPT_SIZE*32, buffer);
	storage_write(flash_blk_size*gpt_primary.current_lba, GPT_SIZE, &gpt_primary);
	gpt_primary_table_dump(&gpt_primary);

	/* start fill gpt primary backup table */
	gpt_primary.current_lba = total_lba - 1,
	gpt_primary.backup_lba = 1;
	gpt_primary.first_usable_lba = (128 * sizeof(struct gpt_part_table)) / flash_blk_size + 2;
	gpt_primary.last_usable_lba = total_lba - gpt_primary.first_usable_lba;
	gpt_primary.part_table_lba = gpt_primary.last_usable_lba + 1;
	gpt_primary.part_table_size = sizeof(struct gpt_part_table);
	
	crc_value = crc32_new(buffer, GPT_SIZE*32);
	gpt_primary.part_table_crc = crc_value;
	gpt_primary.head_crc = 0;
	crc_value = crc32_new((unsigned char *)&gpt_primary, 92);
	gpt_primary.head_crc = crc_value;
	
	storage_write(flash_blk_size*gpt_primary.part_table_lba, GPT_SIZE*32, buffer);
	storage_write(flash_blk_size*gpt_primary.current_lba, GPT_SIZE, &gpt_primary);
	gpt_primary_table_dump(&gpt_primary);

	return 0;
}

int read_part_info_from_gpt(struct part_info *p_infos)
{
	int i, ret;
	disk_partition_t info;
	block_dev_desc_t *dev_desc;

	dev_desc = get_dev("mmc", 0);

	for(i=1; i<GPT_ENTRY_NUMBERS; i++) {
		ret = get_partition_info_efi(dev_desc, i, &info);
		if(ret!=0)
			break;
		else {
			p_infos[i-1].is_extend = false;
			p_infos[i-1].start_block = info.start;
			p_infos[i-1].start_addr = info.start * flash_blk_size;
			p_infos[i-1].block_size = info.size;
			p_infos[i-1].bytes_size = info.size * flash_blk_size;
		}
	}

	return 0;
}

